konidev20 / VaultSharp

A comprehensive cross-platform .NET Library for HashiCorp's Vault, a secret management tool

VaultSharp

The most comprehensive cross-platform .NET Library for HashiCorp's Vault - A Secret Management System.

VaultSharp NuGet:

VaultSharp Latest Documentation: Inline Below and also at: https://rajanadar.github.io/VaultSharp/

VaultSharp Questions/Clarifications: Ask on Stack Overflow with the tag vaultsharp

VaultSharp Gitter Lobby: Gitter Lobby

Report Issues/Feedback: Create a VaultSharp GitHub issue

Contributing Guidlines: VaultSharp Contribution Guidelines

What is VaultSharp?

• VaultSharp is a .NET Standard 1.3, .NET Standard 2.0, .NET Standard 2.1, .NET Framework 4.5, .NET Framework 4.6.x, .NET Framework 4.7.x, .NET Framework 4.8, .NET 5.0, .NET 6.0, .NET 7.0 and .NET 8.0 based cross-platform C# Library that can be used in any .NET application to interact with Hashicorp's Vault.
• The Vault system is a secret management system built as an Http Service by Hashicorp.

VaultSharp has been re-designed ground up, to give a structured user experience across the various auth methods, secrets engines & system apis. Also, the Intellisense on IVaultClient class should help. I have tried to add a lot of documentation.

Give me a quick snippet for use!

• Add a Nuget reference to VaultSharp as follows Install-Package VaultSharp -Version <latest_version>
• Instantiate a IVaultClient as follows:

// Initialize one of the several auth methods.
IAuthMethodInfo authMethod = new TokenAuthMethodInfo("MY_VAULT_TOKEN");

// Initialize settings. You can also set proxies, custom delegates etc. here.
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// Use client to read a key-value secret.

// Very important to provide mountpath and secret name as two separate parameters. Don't provide a single combined string.
// Please use named parameters for 100% clarity of code. (the method also takes version and wrapTimeToLive as params)

Secret<SecretData> kv2Secret = await vaultClient.V1.Secrets.KeyValue.V2
                               .ReadSecretAsync(path: "secretPath", mountPoint: "mountPointIfNotDefault");

// Generate a dynamic Consul credential
Secret<ConsulCredentials> consulCreds = await vaultClient.V1.Secrets.Consul.GetCredentialsAsync(consulRole, consulMount);
string consulToken = consulCreds.Data.Token;

Gist of the features

• VaultSharp supports
  • All the Auth Methods for Logging into Vault. (AppRole, AWS, Azure, GitHub, Google Cloud, JWT/OIDC, Kubernetes, LDAP, Okta, RADIUS, TLS, Tokens & UserPass)
  • All the secret engines to get dynamic credentials. (AD, AWS EC2 and IAM, Consul, Cubbyhole, Databases, Google Cloud, Key-Value, Nomad, PKI, RabbitMQ, SSH and TOTP)
  • Several system APIs including enterprise vault apis
• You can also bring your own "Auth Method" by providing a custom delegate to fetch a token from anywhere.
• VaultSharp has first class support for Consul engine.
• KeyValue engine supports both v1 and v2 apis.
• Abundant intellisense.
• Provides hooks into http-clients to set custom proxy settings etc.

VaultSharp - Supported .NET Platforms and Implementations

VaultSharp is built on .NET Standard 1.3 & .NET Standard 2.0 & .NET Standard 2.1 & .NET Frameworks 4.5, 4.6.x, 4.7.x, 4.8 & .NET 5, .NET 6, .NET 7, .NET 8. This makes it highly compatible and cross-platform.

The following implementations are supported due to that.

• .NET Core 1.x, 2.x, 3.x
• .NET Framework 4.5, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 and 4.8
• .NET 5.0
• .NET 6.0
• .NET 7.0
• .NET 8.0
• Mono 4.x and above
• Xamarin.iOS 10.x and above
• Xamarin Mac 3.x and above
• Xamarin.Android 7.x and above
• UWP 10.x and above

Source: https://github.com/dotnet/standard/blob/master/docs/versions.md

VaultSharp will follow the .NET EOL dates mentioned here:

• https://learn.microsoft.com/en-us/lifecycle/products/microsoft-net-framework
• https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core
• https://learn.microsoft.com/en-us/dotnet/standard/frameworks#supported-target-frameworks

VaultSharp and Consul Support

• VaultSharp supports dynamic Consul credential generation.
• Please look at the API usage in the 'Consul' section of 'Secrets Engines' below, to see all the Consul related methods in action.

VaultSharp and Automatic Token Refresh

• VaultSharp DOES NOT support automatic token refresh.
• It is the responsibility of the host application to refresh the login token as per its expiry.
• The host app is free to use the vaultClient.V1.Auth.ResetVaultToken(); method to refresh the token from time to time.
• The host app is also free to re-initialize the entire VaultClient instance. This is helpful when you use AWS Signatures etc. where even if you try to just reset the vault token, it may fail because the signature time is pretty old. In those cases, feel free to re-initialize the whole vaultclient instance

VaultSharp and VaultClient Dependency Injection Lifetime

• If the vault login token expiry is way more than the deployment cadence of your application, then the recommended lifetime scope for VaultSharp's IVaultClient is Singleton. This is because, it will login only once to Vault to get the auth token and use it for the rest of all the vault calls you make.
• The only use-case when the Singleton lifetime will fail you is if your login token expiry is less than your application's deployment cadence. In that case, you have to either write your automatic token renewal logic OR use a RequestScoped lifetime for DI. Renewal logic is more performant than request scoping. This is because, you wouldn't want vaultsharp to request a login token for every web request of yours.

VaultSharp and Automatic Built-in Client Side failover

• VaultSharp DOES NOT support built-in client-side failover either by supporting multiple endpoint URI's or by supporting roundrobin DNS.
• I repeat, it DOES NOT.
• It works off a single URL that you provide. Any sort of fail-over etc. needs to be done by you.
• You are free to instantiate a new instance of VaultClient with a different URI.

VaultSharp and Immediate Login Failure Detection

• By DEFAULT, VaultSharp performs a lazy login to Vault.
• What this means is that, once you initialize VaultSharp with AuthInfo, VaultSharp will not try to immediately login into Vault.
• It'll attempt to login to Vault, only when the first real functional operation is requested. E.g. ReadSecretAsync etc.
• This has the pro that the acquired token can live as long as possible.
• The downside to this is that, any login issues will be a non-app startup discovery (assuming VaultClient is initialized at app startup) which may be not desirable at all. Folks may want to know that Vault Login failed as early as possible.
• VaultSharp now supports this feature starting version 1.6.0.3
• Imemdiately after initializing vault client, invoke the login method to force a login.

IVaultClient vaultClient = new VaultClient(vaultClientSettings);
vaultClient.V1.Auth.PerformImmediateLogin();

• Please note that this will not work for Token Authentication since you already have a vault token.

Auth Methods

• VaultSharp supports all authentication methods supported by the Vault Service
• Here is a sample to instantiate the vault client with each of the authentication backends.

AliCloud Auth Method

// setup the AliCloud based auth to get the right token.

IAuthMethodInfo authMethod = new AliCloudAuthMethodInfo(roleName, base64EncodedIdentityRequestUrl, base64EncodedIdentityRequestHeaders);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the AliCloud jwt

App Role Auth Method

// setup the AppRole based auth to get the right token.

IAuthMethodInfo authMethod = new AppRoleAuthMethodInfo(roleId, secretId);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the app role and secret id.

AWS Auth Method

AWS Auth method has 2 flavors. An EC2 way and an IAM way. Here are examples for both.

AWS Auth Method - EC2

// setup the AWS-EC2 based auth to get the right token.

IAuthMethodInfo authMethod = new EC2AWSAuthMethodInfo(pkcs7, null, null, nonce, roleName);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the aws-ec2 role

// setup the AWS-EC2 based auth to get the right token.

IAuthMethodInfo authMethod = new EC2AWSAuthMethodInfo(null, identity, signature, nonce, roleName);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the aws-ec2 role

AWS Auth Method - IAM

// setup the AWS-IAM based auth to get the right token.

// Step 1: Pull the following NuGet Packages

// 1. AWSSDK.Core
// 2. AWSSDK.SecurityToken

// Step 2: Boiler-plate code to generate the Signed AWS STS Headers.

var amazonSecurityTokenServiceConfig = new AmazonSecurityTokenServiceConfig();

// If you are running VaultSharp on a real EC2 instance, use the following line of code.
// var awsCredentials = new InstanceProfileAWSCredentials();

// If you are running VaultSharp on a non-EC2 instance like local dev boxes or non-AWS environment, use the following line of code.

AWSCredentials awsCredentials = new StoredProfileAWSCredentials(); // picks up the credentials from your profile.
// AWSCredentials awsCredentials = new BasicAWSCredentials(accessKey: "YOUR_ACCESS_KEY", secretKey: "YOUR_SECRET_KEY"); // explicit credentials

var iamRequest = GetCallerIdentityRequestMarshaller.Instance.Marshall(new GetCallerIdentityRequest());

iamRequest.Endpoint = new Uri(amazonSecurityTokenServiceConfig.DetermineServiceURL());
iamRequest.ResourcePath = "/";

iamRequest.Headers.Add("User-Agent", "https://github.com/rajanadar/vaultsharp/0.11.1000");
iamRequest.Headers.Add("X-Amz-Security-Token", awsCredentials.GetCredentials().Token);
iamRequest.Headers.Add("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");

new AWS4Signer().Sign(iamRequest, amazonSecurityTokenServiceConfig, new RequestMetrics(), awsCredentials.GetCredentials().AccessKey, awsCredentials.GetCredentials().SecretKey);

// This is the point, when you have the final set of required Headers.
var iamSTSRequestHeaders = iamRequest.Headers;

// Step 3: Convert the headers into a base64 value needed by Vault.

var base64EncodedIamRequestHeaders = Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(iamSTSRequestHeaders)));

// Step 4: Setup the IAM AWS Auth Info.

IAuthMethodInfo authMethod = new IAMAWSAuthMethodInfo(nonce: nonce, roleName: roleName, requestHeaders: base64EncodedIamRequestHeaders);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the aws-iam role

Azure Auth Method

// setup the Azure based auth to get the right token.

IAuthMethodInfo authMethod = new AzureAuthMethodInfo(roleName, jwt);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the azure jwt

CloudFoundry Auth Method

// setup the CloudFoundry based auth to get the right token.

IAuthMethodInfo authMethod = new CloudFoundryAuthMethodInfo(roleName, instanceCertContent, instanceKeyContent);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the CloudFoundry jwt

CloudFoundry Signature Creation

• I have created GH Gist with a helper class to generate on-demand CloudFoundry signature.
• https://gist.github.com/rajanadar/84769efeca64e0128d7a8a627b7bb4db
• Use the CloudFoundrySignatureProvider class as follows

var signing_time = CloudFoundrySignatureProvider.GetFormattedSigningTime(DateTime.UtcNow);
var signature = CloudFoundrySignatureProvider.GetSignature(signingTime, cfInstanceCertContent, roleName, cfInstanceKeyContent);

GitHub Auth Method

IAuthMethodInfo authMethod = new GitHubAuthMethodInfo(personalAccessToken);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the github token.

Google Cloud Auth Method

// setup the Google Cloud based auth to get the right token.

IAuthMethodInfo authMethod = new GoogleCloudAuthMethodInfo(roleName, jwt);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the Google Cloud jwt

JWT/OIDC Auth Method

// setup the JWT/OIDC based auth to get the right token.

IAuthMethodInfo authMethod = new JWTAuthMethodInfo(roleName, jwt);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the jwt

Kubernetes Auth Method

// setup the Kubernetes based auth to get the right token.

IAuthMethodInfo authMethod = new KubernetesAuthMethodInfo(roleName, jwt);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the Kubernetes jwt

LDAP Authentication Backend

LDAP Authentication Login Method

IAuthMethodInfo authMethod = new LDAPAuthMethodInfo(userName, password);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the LDAP username and password.

LDAP Auth Backend - Groups and User management

• You can use the methods to CRUD LDAP groups and users now.

await _authenticatedVaultClient.V1.Auth.LDAP.WriteGroupAsync(groupName, policies);
await _authenticatedVaultClient.V1.Auth.LDAP.ReadGroupAsync(groupName);
await _authenticatedVaultClient.V1.Auth.LDAP.ReadAllGroupsAsync();
await _authenticatedVaultClient.V1.Auth.LDAP.DeleteGroupAsync(groupName);

await _authenticatedVaultClient.V1.Auth.LDAP.WriteUserAsync(username, policies, groups);
await _authenticatedVaultClient.V1.Auth.LDAP.ReadUserAsync(username);
await _authenticatedVaultClient.V1.Auth.LDAP.ReadAllUsersAsync();
await _authenticatedVaultClient.V1.Auth.LDAP.DeleteUserAsync(username);

Kerberos Authentication Backend

Requires https://github.com/wintoncode/vault-plugin-auth-kerberos .

IAuthMethodInfo authMethod = new KerberosAuthMethodInfo(); // uses network credential by default.
// IAuthMethodInfo authMethod = new KerberosAuthMethodInfo(credentials); // use your own ICredentials
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the 
// vault token/policies mapped to the current ActiveDirectory/Kerberos identity.

If you are dealing with a keytab file and krb5 config file and want to use VaultSharp, you can do that using the following two steps:

• Use this gist to generate SP-Nego-Token from the keytab and krb5 file: https://gist.github.com/rajanadar/28c86d967695262bfe1f17ae82fb3d3d
• Once you have the token use VaultSettings.BeforeApiRequestAction to set the Authorization header to the Sp-nego-toekn value from the above helper method.

OCI Auth Method

var requestHeaders = new Dictionary<string, object>
{
     {"date", new List<string> { "Fri, 22 Aug 2019 21:02:19 GMT" } },
     {"(request-target)", new List<string> { "get /v1/auth/oci/login/devrole" } },
     {"host", new List<string> { "127.0.0.1" } },
     {"content-type", new List<string> { "application/json" } },
     {"authorization", new List<string> { 
          "Signature algorithm=\"rsa-sha256\",headers=\"date (request-target) host\",keyId=\"ocid1.tenancy.oc1..aaaaaaaaba3pv6wkcr4jqae5f15p2b2m2yt2j6rx32uzr4h25vqstifsfdsq/ocid1.user.oc1..aaaaaaaat5nvwcna5j6aqzjcaty5eqbb6qt2jvpkanghtgdaqedqw3rynjq/73:61:a2:21:67:e0:df:be:7e:4b:93:1e:15:98:a5:b7\",signature=\"GBas7grhyrhSKHP6AVIj/h5/Vp8bd/peM79H9Wv8kjoaCivujVXlpbKLjMPeDUhxkFIWtTtLBj3sUzaFj34XE6YZAHc9r2DmE4pMwOAy/kiITcZxa1oHPOeRheC0jP2dqbTll8fmTZVwKZOKHYPtrLJIJQHJjNvxFWeHQjMaR7M=\",version=\"1\""
        } }
};

IAuthMethodInfo authMethod = new OCIAuthMethodInfo(roleName, requestHeaders);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the OCI entity.

Okta Auth Method

IAuthMethodInfo authMethod = new OktaAuthMethodInfo(userName, password);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the Okta username and password.

Okta Verify

string nonce = "<nonce>";
var challengeResponse = await vaultClient.V1.Auth.Okta.VerifyPushChallengeAsync(nonce);
var answer = challengeResponse.Data.CorrectAnswer;

// verify this answer

RADIUS Auth Method

IAuthMethodInfo authMethod = new RADIUSAuthMethodInfo(userName, password);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the RADIUS username and password.

Certificate (TLS) Auth Method

// Please note that the certificate needs to be in pkcs12 format with a private key.
// Turn your cert + key into pkcs12 format with the following command:

// openssl pkcs12 -export -out Cert.p12 -in your-cert.pem -inkey your-key.pem

var certificate = new X509Certificate2(your-p12-bytes, your-pass);

IAuthMethodInfo authMethod = new CertAuthMethodInfo(certificate);

// Optionally, you can also provide a Certificate Role Name during Auth.
// IAuthMethodInfo authMethod = new CertAuthMethodInfo(certificate, certificateRoleName);

// And if you want to use the full chain of client-certificates, then use this overload
// X509Certificate2Collection x509Certificate2Collection = <load the full chain of certs>;
// IAuthMethodInfo authMethod = new CertAuthMethodInfo(x509Certificate2Collection);

var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the client certificate.

Token Auth Method

Token Auth Login Method

IAuthMethodInfo authMethod = new TokenAuthMethodInfo(vaultToken);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the vault token.

Token Creation

• You can use the CreateTokenAsync method to create various types of tokens.

CreateTokenRequest request = new CreateTokenRequest();

// CreateTokenRequest has options to create orphaned tokens, role based tokens etc. with attached policies.
Secret<object> tokenData = await _authenticatedVaultClient.V1.Auth.Token.CreateTokenAsync(request);

Token Lookup (any Token)

• You can use the LookupAsync method to lookup information about any Vault Token.

string token = "token-for-which-you-need-info";

Secret<ClientTokenInfo> tokenData = await _authenticatedVaultClient.V1.Auth.Token.LookupAsync(token);

Token Lookup (Calling Token)

• You can use the LookupSelfAsync method to lookup information about your current Vault Token.

Secret<CallingTokenInfo> tokenData = await _authenticatedVaultClient.V1.Auth.Token.LookupSelfAsync();

Username and Password Auth Method

IAuthMethodInfo authMethod = new UserPassAuthMethodInfo(username, password);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// any operations done using the vaultClient will use the
// vault token/policies mapped to the username/password.

Custom Auth Method - Bring your own Vault Token

• In cases where the Vault Server has a supported Auth backend, not YET supported by VaultSharp, you can use the CustomAuthMethodInfo
• In this approach, you write the delegate logic that gets the token from Vault along with lease renewal info etc.

// Func<Task<CustomAuthMethodInfo>> getCustomAuthMethodInfoAsync = a custom async method to return the vault token.
IAuthMethodInfo authMethod = new CustomAuthMethodInfo("vault-server-auth-method", getCustomAuthMethodInfoAsync);
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

// Once VaultSharp evaluates the delegate, VaultSharp can now provide you with the associated lease info for the Token as well.
// authMethod.ReturnedLoginAuthInfo has all the info including the token and renewal info.

App Id Auth Method (DEPRECATED)

• Please note that the app-id auth backend has been deprecated by Vault. They recommend us to use the AppRole backend.
• So VaultSharp doesn't support App Id natively.
• If you are in dire need of the App Id support, please raise an issue.

MFA (LEGACY/UNSUPPORTED)

• Please note that this legacy Auth Method is not supported by Vault anymore.
• Instead Vault Enterprise contains a fully-supported MFA system.
• It is significantly more complete and flexible and which can be used throughout Vault's API.
• Please see the System Backend section of the docs for the Enterprise MFA apis.

Force re-fetch of Vault Login

• Whenever you initialize VaultSharp with an appropriate AuthMethod, VaultSharp fetches the vault token on the first authenticated Vault operation requested by the host app.
• Once VaultSharp has this token, it never re-fetches the token.
• This means, when the token expires, Vault calls will start failing.
• The older way to solve for this is for the host app to keep track of the token's TTL and re-initialize VaultClient. This ensures that VaultSharp will fetch the vault-token again.
• However, a lot of our clients don't want to mess with the singleton nature of VaultClient.
• So VaultSharp now supports the ability to set a flag that tells VaultSharp to refetch the vault token during the next Vault operation.
• As a client, whenever you determine that the token needs to be re-fetched, call this method.
• It'll make VaultSharp fetch the vault token again before the next operation.

// when it is time to re-fetch the login token, just set this flag.
vaultClient.V1.Auth.ResetVaultToken();

Secrets Engines

• VaultSharp supports all secrets engines supported by the Vault Service
• Here is a sample to instantiate the vault client with each of the secrets engine

All of the below examples assume that you have a vault client instance ready. e.g.

// Initialize one of the several auth methods.
IAuthMethodInfo authMethod = new TokenAuthMethodInfo("MY_VAULT_TOKEN");

// Initialize settings. You can also set proxies, custom delegates etc. here.
var vaultClientSettings = new VaultClientSettings("https://MY_VAULT_SERVER:8200", authMethod);

IVaultClient vaultClient = new VaultClient(vaultClientSettings);

Active Directory Secrets Engine

Retrieving Passwords (offering credentials)

• This method offers the credential information for a given role.

Secret<ActiveDirectoryCredentials> adCreds = await vaultClient.V1.Secrets.ActiveDirectory.GetCredentialsAsync(role);
string currentPassword = adCreds.Data.CurrentPassword;

AliCloud Secrets Engine

Generate RAM Credentials

• This endpoint generates dynamic RAM credentials based on the named role.

Secret<AliCloudCredentials> aliCloudCreds = await vaultClient.V1.Secrets.AliCloud.GetCredentialsAsync(role);

string accessKey = aliCloudCreds.Data.AccessKey;
string secretKey = aliCloudCreds.Data.SecretKey;
string securityToken = aliCloudCreds.Data.SecurityToken;
string expiration = aliCloudCreds.Data.Expiration;

AWS Secrets Engine

Configure Root IAM Credential

• This endpoint configures the root IAM credentials to communicate with AWS.

var configureRootIAMCredentialsModel = new ConfigureRootIAMCredentialsModel
{
   AccessKey = "<>",
   SecretKey = "<>",
   Region = "<>"
};

await vaultClient.V1.Secrets.AWS.ConfigureRootIAMCredentialsAsync(configureRootIAMCredentialsModel);

Read Root IAM Credential

• This endpoint allows you to read non-secure values that have been configured in the config/root endpoint.
• In particular, the secret_key parameter is never returned.

Secret<RootIAMCredentialsConfigModel> config = await vaultClient.V1.Secrets.AWS.GetRootIAMCredentialsConfigAsync();

Rotate Root IAM Credential

• When you have configured Vault with static credentials, you can use this endpoint to have Vault rotate the access key it used.

Secret<RotateRootIAMCredentialsResponseModel> response = await vaultClient.V1.Secrets.AWS.RotateRootIAMCredentialsAsync();

string newAccessKey = response.Data.NewAccessKey;

Configure Lease

• This endpoint configures lease settings for the AWS secrets engine.

var leaseConfigModel = new AWSLeaseConfigModel
{
   Lease = "36h",
   MaximumLease = "72h"
};

await vaultClient.V1.Secrets.AWS.ConfigureLeaseAsync(leaseConfigModel);

Read Lease

• This endpoint returns the current lease settings for the AWS secrets engine.

Secret<AWSLeaseConfigModel> lease = await vaultClient.V1.Secrets.AWS.GetLeaseConfigAsync();

Write Role

• This endpoint creates or updates the role with the given name.

var role = new CreateAWSRoleModel
{
   CredentialType = AWSCredentialsType.federation_token,
   PolicyDocument = "{\"Version\": \"...\"}"
};

await vaultClient.V1.Secrets.AWS.WriteRoleAsync("my-role-name", role);

Read Role

• This endpoint reads details of one AWS Role.

Secret<AWSRoleModel> role = await vaultClient.V1.Secrets.AWS.ReadRoleAsync(roleName);
List<AWSCredentialsType> credTypes = role.Data.CredentialTypes;

Read All Roles

• This endpoint reads all the AWS Roles

Secret<ListInfo> roles = await vaultClient.V1.Secrets.AWS.ReadAllRolesAsync();
List<string> names = roles.Data;

Generate IAM Credentials

• This endpoint generates dynamic IAM credentials based on the named role.

Secret<AWSCredentials> awsCreds = await vaultClient.V1.Secrets.AWS.GetCredentialsAsync(role);

string accessKey = awsCreds.Data.AccessKey;
string secretKey = awsCreds.Data.SecretKey;
string securityToken = awsCreds.Data.SecurityToken;

Generate IAM Credentials with STS

• This generates a dynamic IAM credential with an STS token based on the named role.

Secret<AWSCredentials> awsCreds = await vaultClient.V1.Secrets.AWS.GenerateSTSCredentialsAsync(role, ttl);

string accessKey = awsCreds.Data.AccessKey;
string secretKey = awsCreds.Data.SecretKey;
string securityToken = awsCreds.Data.SecurityToken;

Azure Secrets Engine

Generate dynamic Azure credentials

• This endpoint generates a new service principal based on the named role.

Secret<AzureCredentials> azureCredentials = await vaultClient.V1.Secrets.Azure.GetCredentialsAsync(roleName);
string clientId = azureCredentials.Data.ClientId;
string clientSecret = azureCredentials.Data.ClientSecret;

Consul Secrets Engine

• This endpoint generates a dynamic Consul token based on the given role definition.

// Generate a dynamic Consul credential
Secret<ConsulCredentials> consulCreds = await vaultClient.V1.Secrets.Consul.GetCredentialsAsync(consulRole);
string consulToken = consulCredentials.Data.Token;

Cubbyhole Secrets Engine

Read Secret

• This endpoint retrieves the secret at the specified location.

Secret<Dictionary<string, object>> secret = await vaultClient.V1.Secrets.Cubbyhole.ReadSecretAsync(secretPath);
Dictionary<string, object> secretValues = secret.Data;

List Secrets

• This endpoint returns a list of secret entries at the specified location.
• Folders are suffixed with /. The input must be a folder; list on a file will not return a value.
• The values themselves are not accessible via this command.

Secret<ListInfo> secret = await vaultClient.V1.Secrets.Cubbyhole.ReadSecretPathsAsync(folderPath);
ListInfo paths = secret.Data;

Create/Update Secret

• This endpoint stores a secret at the specified location.

var value = new Dictionary<string, object> { { "key1", "val1" }, { "key2", 2 } };
await vaultClient.V1.Secrets.Cubbyhole.WriteSecretAsync(secretPath, value);

Delete Secret

• This endpoint deletes the secret at the specified location.

await vaultClient.V1.Secrets.Cubbyhole.DeleteSecretAsync(secretPath);

Databases Secrets Engine

Generate dynamic DB credentials

• This endpoint generates a new set of dynamic credentials based on the named role.

Secret<UsernamePasswordCredentials> dbCreds = await vaultClient.V1.Secrets.Database.GetCredentialsAsync(role);
string username = dbCreds.Data.Username;
string password = dbCreds.Data.Password;

Create, Read and Delete Database Roles (please see next section for static db roles)

• These endpoints manage the creation, reading and deletion of DB roles.

await vaultClient.V1.Secrets.Database.CreateRoleAsync(roleName, roleRequest);

await vaultClient.V1.Secrets.Database.ReadRoleAsync(roleName);

await vaultClient.V1.Secrets.Database.ReadAllRolesAsync();

await vaultClient.V1.Secrets.Database.DeleteRoleAsync(roleName);

Create, Read and Delete Static Database Roles

• These endpoints manage the creation, reading and deletion of static DB roles.

await vaultClient.V1.Secrets.Database.CreateStaticRoleAsync(roleName, roleRequest);

await vaultClient.V1.Secrets.Database.ReadStaticRoleAsync(roleName);

await vaultClient.V1.Secrets.Database.ReadAllStaticRolesAsync();

await vaultClient.V1.Secrets.Database.DeleteStaticRoleAsync(roleName);

Generate Static DB credentials

• This endpoint generates a new set of static credentials based on the named role.

Secret<StaticCredentials> dbCreds = await vaultClient.V1.Secrets.Database.GetStaticCredentialsAsync(role);

Rotate static DB credentials

• This endpoint rotates the static credentials on demand.

await vaultClient.V1.Secrets.Database.RotateStaticCredentialsAsync(role);

Google Cloud Secrets Engine

Generate Secret (IAM Service Account Creds): OAuth2 Access Token

• Generates an OAuth2 token with the scopes defined on the roleset. This OAuth access token can be used in GCP API calls

Secret<GoogleCloudOAuth2Token> oauthSecret = await vaultClient.V1.Secrets.GoogleCloud.GetOAuth2TokenAsync(roleset);
string token = oauthSecret.Data.Token;

Generate Secret (IAM Service Account Creds): Service Account Key

• Generates a service account key.

Secret<GoogleCloudServiceAccountKey> privateKeySecret = await vaultClient.V1.Secrets.GoogleCloud.GenerateServiceAccountKeyAsync(roleset, keyAlgorithm, privateKeyType);
string privateKeyData = privateKeySecret.Data.Base64EncodedPrivateKeyData;

Google Cloud KMS Secrets Engine

Encrypt, Decrypt, ReEncrypt, Sign & Verify

await vaultClient.V1.Secrets.GoogleCloudKMS.EncryptAsync(keyName, requestOptions);
await vaultClient.V1.Secrets.GoogleCloudKMS.DecryptAsync(keyName, requestOptions);
await vaultClient.V1.Secrets.GoogleCloudKMS.ReEncryptAsync(keyName, requestOptions);
await vaultClient.V1.Secrets.GoogleCloudKMS.SignAsync(keyName, requestOptions);
await vaultClient.V1.Secrets.GoogleCloudKMS.VerifyAsync(keyName, requestOptions);

Key Value Secrets Engine

• VaultSharp supports both v1 and v2 of the Key Value Secrets Engine.
• Here are examples for both.

Key Value Secrets Engine - V1

Create/Update Secret

• This endpoint stores a secret at the specified location.
• If the value does not yet exist, the calling token must have an ACL policy granting the create capability.
• If the value already exists, the calling token must have an ACL policy granting the update capability.

var value = new Dictionary<string, object> { { "key1", "val1" }, { "key2", 2 } };
var writtenValue = await vaultClient.V1.Secrets.KeyValue.V1.WriteSecretAsync(secretPath, value);

Read Secret

• Reads the secret at the specified location returning data.

// Use client to read a v1 key-value secret.
Secret<Dictionary<string, object>> kv1Secret = await vaultClient.V1.Secrets.KeyValue.V1.ReadSecretAsync("v1-secret-name");
Dictionary<string, object> dataDictionary = kv1Secret.Data;

List Secrets

• This endpoint returns a list of key names at the specified location.
• Folders are suffixed with /. The input must be a folder; list on a file will not return a value.
• Note that no policy-based filtering is performed on keys; do not encode sensitive information in key names.
• The values themselves are not accessible via this command.

Secret<ListInfo> secret = await vaultClient.V1.Secrets.KeyValue.V1.ReadSecretPathsAsync(path);
ListInfo paths = secret.Data;

Delete Secret

• This endpoint deletes the secret at the specified location.

await vaultClient.V1.Secrets.KeyValue.V1.DeleteSecretAsync(secretPath);

Key Value Secrets Engine - V2

Create/Update Secret

• This endpoint stores a secret at the specified location.
• If the value does not yet exist, the calling token must have an ACL policy granting the create capability.
• If the value already exists, the calling token must have an ACL policy granting the update capability.

var value = new Dictionary<string, object> { { "key1", "val1" }, { "key2", 2 } };
var writtenValue = await vaultClient.V1.Secrets.KeyValue.V2.WriteSecretAsync(secretPath, value, checkAndSet);

Patch Secret

• You can also patch a secret that already exists.
• Patching means, replacing/adding new key-values to an existing map of secrets.

var valueToBeCombined = new Dictionary<string, object> { { "key2", "new-val2" }, { "key3", "val3" } };

var patchSecretDataRequest = new PatchSecretDataRequest() { Data = valueToBeCombined };

var metadata = await vaultClient.V1.Secrets.KeyValue.V2.PatchSecretAsync(secretPath, valueToBeCombined);

Read Secret

• Reads the secret at the specified location returning data and metadata.

// Use client to read a v2 key-value secret.

// Very important to provide mountpath and secret name as two separate parameters. Don't provide a single combined string.
// Please use named parameters for 100% clarity of code. (the method also takes version and wrapTimeToLive as params)

Secret<Dictionary<string, object>> kv2Secret = await vaultClient.V1.Secrets.KeyValue.V2
                               .ReadSecretAsync(path: "v2-secret-name", mountPoint: "mountPointIfNotDefault");

Dictionary<string, object> dataDictionary = kv2Secret.Data;

Write Metadata

• Creates or updates the metadata of a secret at the specified location in the K/V v2 secrets engine.

var writeCustomMetadataRequest = new CustomMetadataRequest
            {
                CustomMetadata = new Dictionary<string, string>
                {
                    { "owner", "system"},
                    { "expired_in", "20331010"}
                }
            };

 await _authenticatedVaultClient.V1.Secrets.KeyValue.V2.WriteSecretMetadataAsync(path, writeCustomMetadataRequest, mountPoint: kv2SecretsEngine.Path);
       

Patch Metadata

• Patch the metadata of a secret at specified location in the K/V v2 secrets engine.

 var patchCustomMetadataRequest = new CustomMetadataRequest
            {
                CustomMetadata = new Dictionary<string, string>
                {
                    { "locale", "EN"},
                    { "expired_in", "20341010"}
                }
            };

 await _authenticatedVaultClient.V1.Secrets.KeyValue.V2.PatchSecretMetadataAsync(path, patchCustomMetadataRequest, mountPoint: kv2SecretsEngine.Path)
            

Read Metadata

• Reads the secret metadata at the specified location returning.

Secret<FullSecretMetadata> kv2SecretMetadata = await vaultClient.V1.Secrets.KeyValue.V2.ReadSecretMetadataAsync("v1-secret-name");

List Secrets

• This endpoint returns a list of key names at the specified location.
• Folders are suffixed with /. The input must be a folder; list on a file will not return a value.
• Note that no policy-based filtering is performed on keys; do not encode sensitive information in key names.
• The values themselves are not accessible via this command.

Secret<ListInfo> secret = await vaultClient.V1.Secrets.KeyValue.V2.ReadSecretPathsAsync(path);
ListInfo paths = secret.Data;

Read Secret Subkeys

• This endpoint provides the subkeys within a secret entry that exists at the requested path.
• The secret entry at this path will be retrieved and stripped of all data by replacing underlying values of leaf keys (i.e. non-map keys or map keys with no underlying subkeys) with null.

Secret<SecretSubkeysInfo> secret = await vaultClient.V1.Secrets.KeyValue.V2.ReadSecretSubkeysAsync(path)
SecretSubkeysInfo subkeys = secret.Data;

Delete Secret

• This endpoint issues a soft delete of the secret's latest version at the specified location.
• This marks the version as deleted and will stop it from being returned from reads, but the underlying data will not be removed.
• A delete can be undone using the undelete method.

await vaultClient.V1.Secrets.KeyValue.V2.DeleteSecretAsync(secretPath);

Delete Secret Versions

• This endpoint issues a soft delete of the specified versions of the secret.
• This marks the versions as deleted and will stop them from being returned from reads, but the underlying data will not be removed.
• A delete can be undone using the undelete method.

await vaultClient.V1.Secrets.KeyValue.V2.DeleteSecretVersionsAsync(secretPath, versions);

Undelete Secret Versions

• Undeletes the data for the provided version and path in the key-value store.
• This restores the data, allowing it to be returned on get requests.

await vaultClient.V1.Secrets.KeyValue.V2.UndeleteSecretVersionsAsync(secretPath, versions);

Destroy Secret

• This endpoint destroys the secret at the specified location for the given versions.

await vaultClient.V1.Secrets.KeyValue.V2.DestroySecretAsync(secretPath, new List<int> { 1, 2 });

Delete Secret Metadata and all versions

• This endpoint permanently deletes the key metadata and all version data for the specified key.
• All version history will be removed.

await vaultClient.V1.Secrets.KeyValue.V2.DeleteMetadataAsync(secretPath);

Identity Secrets Engine

Generate a Signed ID Token

• Use this endpoint to generate a signed ID (OIDC) token.

Secret<IdentityToken> token = await vaultClient.V1.Secrets.Identity.GetTokenAsync(roleName);
string clientId = token.Data.ClientId;
string token = token.Data.Token;

Introspect a signed ID Token

• This endpoint can verify the authenticity and active state of a signed ID token.

Secret<bool> activeResponse = await vaultClient.V1.Secrets.Identity.IntrospectTokenAsync(token, clientId);
bool active = activeResponse.Data;

KeyManagement Secrets Engine (Enterprise)

Read Key

• Returns information about a named key.
• The keys object will hold information regarding each key version.
• Different information will be returned depending on the key type.
• For example, an asymmetric key will return its public key in a standard format for the type.

Secret<KeyManagementKey> keyManagementKey = await vaultClient.V1.Secrets.Enterprise.KeyManagement.ReadKeyAsync(keyName);
var keys = keyManagementKey.Data.Keys;

Read Key in KMS

• Returns information about a named key in KMS.

Secret<KeyManagementKMSKey> keyManagementKMSKey = await vaultClient.V1.Secrets.Enterprise.KeyManagement.ReadKeyInKMSAsync(kmsName, keyName);
var name = keyManagementKMSKey.Data.Name;
var purpose = keyManagementKMSKey.Data.Purpose;
var protection = keyManagementKMSKey.Data.Protection;

KMIP Secrets Engine (Enterprise)

Generate dynamic credentials

• Create a new client certificate tied to the given role and scope.

Secret<KMIPCredentials> kmipCredentials = await vaultClient.V1.Secrets.Enterprise.KMIP.GetCredentialsAsync(scopeName, roleName);
string certificateContent = kmipCredentials.Data.CertificateContent;
string privateKeyContent = kmipCredentials.Data.PrivateKeyContent;

Kubernetes Secrets Engine

Generate dynamic credentials

Secret<KubernetesCredentials> kubernetesCredentials = await vaultClient.V1.Secrets.Kubernetes.GetCredentialsAsync(ksRoleName, ksNamespace);
string serviceAccountToken = kubernetesCredentials.Data.ServiceAccountToken;

MongoDBAtlas Secrets Engine

Generate dynamic credentials

• Generates a dynamic MongoDBAtlas creds based on the given role definition.

Secret<MongoDBAtlasCredentials> creds = await vaultClient.V1.Secrets.MongoDBAtlas.GetCredentialsAsync(name);
string privateKey = creds.Data.PrivateKey;
string publicKey = creds.Data.PublicKey;

Nomad Secrets Engine

Generate dynamic credentials

• Generates a dynamic Nomad token based on the given role definition.

Secret<NomadCredentials> nomadCredentials = await vaultClient.V1.Secrets.Nomad.GetCredentialsAsync(roleName);
string accessorId = nomadCredentials.Data.AccessorId;
string secretId = nomadCredentials.Data.SecretId;

OpenLDAP Secrets Engine

Generate dynamic role credentials

• This endpoint offers the credential information for a given role.

Secret<LDAPCredentials> credentials = await vaultClient.V1.Secrets.OpenLDAP.GetDynamicCredentialsAsync(roleName);
string username = credentials.Data.Username;
string password = credentials.Data.Password;

Generate static role credentials

• This endpoint offers the credential information for a given static-role.

Secret<StaticCredentials> credentials = await vaultClient.V1.Secrets.OpenLDAP.GetStaticCredentialsAsync(roleName);
string username = credentials.Data.Username;
string password = credentials.Data.Password;

PKI (Certificates) Secrets Engine

Generate credentials

var certificateCredentialsRequestOptions = new CertificateCredentialsRequestOptions { // initialize };
Secret<CertificateCredentials> certSecret = await vaultClient.V1.Secrets.PKI.GetCredentialsAsync(pkiRoleName, certificateCredentialsRequestOptions);

string privateKeyContent = certSecret.Data.PrivateKeyContent;

Sign Certificate

var signCertificateRequestOptions = new SignCertificateRequestOptions { // initialize };
Secret<SignedCertificateData> certSecret = await vaultClient.V1.Secrets.PKI.SignCertificateAsync(pkiRoleName, signCertificateRequestOptions);

string certificateContent = certSecret.Data.CertificateContent;

Revoke Certificate

Secret<RevokeCertificateResponse> revoke = await vaultClient.V1.Secrets.PKI.RevokeCertificateAsync(serialNumber);
long revocationTime = revoke.Data.RevocationTime;

Tidy up Certificate Storage

var request = new CertificateTidyRequest { TidyCertStore = false, TidyRevokedCerts = true };
await vaultClient.V1.Secrets.PKI.TidyAsync(request);

Configure Automatic Tidying up of Certificate Storage

var request = new CertificateAutoTidyRequest { TidyCertStore = false, TidyRevokedCerts = true };
await vaultClient.V1.Secrets.PKI.AutoTidyAsync(request);

Get Status of Certificate Tidying Process

var tidyStatus = await vaultClient.V1.Secrets.PKI.GetTidyStatusAsync();
CertificateTidyState state = tidyStatus.Data.TidyState;

Cancel Certificate Tidying Process

var tidyStatus = await vaultClient.V1.Secrets.PKI.CancelTidyAsync();
CertificateTidyState state = tidyStatus.Data.TidyState;

List certificates

• This endpoint retrieves a list of certificate keys (serial numbers)

var keys = await vaultClient.V1.Secrets.PKI.ListCertificatesAsync(mountpoint);
Assert.IsTrue(keys.Any(k => k == "17:67:16:b0:b9:45:58:c0:3a:29:e3:cb:d6:98:33:7a:a6:3b:66:c1"));

List revoked certificates

• This endpoint retrieves a list of revoked certificate keys (serial numbers)

var keys = await vaultClient.V1.Secrets.PKI.ListRevokedCertificatesAsync(mountpoint);
Assert.IsTrue(keys.Any(k => k == "17:67:16:b0:b9:45:58:c0:3a:29:e3:cb:d6:98:33:7a:a6:3b:66:c1"));

Read certificate

• This endpoint retrieves a certificate by key (serial number)
• The certificate format is always PEM.
• This is an unauthenticated endpoint.

var cert = await vaultClient.V1.Secrets.PKI.ReadCertificateAsync("17:67:16:b0:b9:45:58:c0:3a:29:e3:cb:d6:98:33:7a:a6:3b:66:c1", mountpoint);
Assert.NotNull(cert.CertificateContent);

Read CA Certificate

• This endpoint retrieves the CA certificate in raw DER-encoded form.
• The CA certificate can be returned in PEM or DER format.
• This is an unauthenticated endpoint.

var caCert = await vaultClient.V1.Secrets.PKI.ReadCACertificateAsync(CertificateFormat.pem, mountpoint);
Assert.NotNull(caCert.CertificateContent);

RabbitMQ Secrets Engine

Generate dynamic DB credentials

• This endpoint generates a new set of dynamic credentials based on the named role.

Secret<UsernamePasswordCredentials> secret = await vaultClient.V1.Secrets.RabbitMQ.GetCredentialsAsync(roleName);
string username = secret.Data.Username;
string password = secret.Data.Password;

Create, Read and Delete RabbitMQ Roles

• These endpoints manage the creation, reading and deletion of RabbitMQ roles.

var virtualHostName = "/";
var virtualHostPermission = new { write = ".*", read = ".*" };
var virtualHosts = new Dictionary<string, object>() { { virtualHostName, virtualHostPermission } };
var virtualHostsJson = JsonSerializer.Serialize(virtualHosts);
var role = new RabbitMQRole() { VHosts = virtualHostsJson }        
await vaultClient.V1.Secrets.RabbitMQ.CreateRoleAsync(roleName, role, mountPoint);

await vaultClient.V1.Secrets.RabbitMQ.ReadRoleAsync(roleName, mountPoint);

await vaultClient.V1.Secrets.RabbitMQ.DeleteRoleAsync(roleName, mountPoint);

SSH Secrets Engine

Generate SSH credentials

• This endpoint creates credentials for a specific username and IP with the parameters defined in the given role.

Secret<SSHCredentials> sshCreds = await vaultClient.V1.Secrets.SSH.GetCredentialsAsync(role, ipAddress, username);
string sshKey = sshCreds.Data.Key;

SSH key signing

• This endpoint signs an SSH public key based on the supplied parameters, subject to the restrictions contained in the role named in the endpoint.

SignKeyRequest request = new SignKeyRequest { PublicKey = "ipsem" };
Secret<SignedKeyResponse> signedKey = await vaultClient.V1.Secrets.SSH.SignKeyAsync(roleName, request);
string signedKey = signedKey.Data.SignedKey;

Terraform Cloud Secrets Engine

Generate credentials

• This endpoint returns a Terraform Cloud token based on the given role definition.
• For Organization and Team roles, the same API token is returned until the token is rotated with rotate-role.
• For User roles, a new token is generated with each request.

Secret<TerraformCredentials> secret = await vaultClient.V1.Secrets.Terraform.GetCredentialsAsync(role);
string token = secret.Data.Token;
string tokenId = secret.Data.TokenId;

TOTP Secrets Engine

Generate Code

This endpoint generates a new time-based one-time use password based on the named key.

Secret<TOTPCode> totpSecret = await vaultClient.V1.Secrets.TOTP.GetCodeAsync(keyName);
string code = totpSecret.Data.Code;

Validate Code

This endpoint validates a time-based one-time use password generated from the named key.

Secret<TOTPCodeValidity> totpValidity = await vaultClient.V1.Secrets.TOTP.ValidateCodeAsync(keyName, code);
bool valid = totpValidity.Data.Valid;

Create TOTP Key

This endpoint creates or updates a key definition. You can create both Vault based or non-vault based keys.

TOTPCreateKeyRequest request = new TOTPCreateKeyRequest
{
 Issuer = "Google",
 AccountName = "[e-mail]",
 KeyGenerationOption = new TOTPVaultBasedKeyGeneration { // specific stuff }
 // for non-vault based, use new TOTPNonVaultBasedKeyGeneration { // specific stuff }
};

Secret<TOTPCreateKeyResponse> response = await vaultClient.V1.Secrets.TOTP.CreateKeyAsync(keyName, request);
var barcode = response.Data.Barcode;

Read Key

This endpoint queries the key definition.

Secret<TOTPKey> key = await vaultClient.V1.Secrets.TOTP.ReadKeyAsync(keyName);

Read all Keys

This endpoint returns a list of available keys. Only the key names are returned, not any values.

Secret<ListInfo> keys = await vaultClient.V1.Secrets.TOTP.ReadAllKeysAsync();

Delete Key

This endpoint deletes the key definition.

await vaultClient.V1.Secrets.TOTP.DeleteKeyAsync(keyName);

Transform Secrets Engine (Enterprise)

Encode Method

Encode Single Item

var encodeOptions = new EncodeRequestOptions { Value = "ipsem" };
Secret<EncodedResponse> response = await _authenticatedVaultClient.V1.Secrets.Enterprise.Transform.EncodeAsync(roleName, encodeOptions);
response.Data.EncodedValue;

Encode Batched Items

var encodeOptions = new EncodeRequestOptions 
{ 
  BatchItems = new List<EncodingItem> { new EncodingItem { Value = "ipsem1" }, new EncodingItem { Value = "ipsem2" } }
};

Secret<EncodedResponse> response = await _authenticatedVaultClient.V1.Secrets.Enterprise.Transform.EncodeAsync(roleName, encodeOptions);
response.Data.EncodedItems;

Decode Method

Decode Single Item

var decodeOptions = new DecodeRequestOptions { Value = "ipsem" };
Secret<DecodedResponse> response = await _authenticatedVaultClient.V1.Secrets.Enterprise.Transform.DecodeAsync(roleName, decodeOptions);
response.Data.DecodedValue;

Decode Batched Item

var decodeOptions = new DecodeRequestOptions 
{ 
  BatchItems = new List<DecodingItem> { new DecodingItem { Value = "ipsem1" }, new DecodingItem { Value = "ipsem2" } }
};

Secret<DecodedResponse> response = await _authenticatedVaultClient.V1.Secrets.Enterprise.Transform.DecodeAsync(roleName, decodeOptions);
response.Data.DecodedItems;

Transit Secrets Engine

Encrypt Method

Encrypt Single Item

var keyName = "test_key";

var context = "context1";
var plainText = "raja";
var encodedPlainText = Convert.ToBase64String(Encoding.UTF8.GetBytes(plainText));
var encodedContext = Convert.ToBase64String(Encoding.UTF8.GetBytes(context));

var encryptOptions = new EncryptRequestOptions
{
    Base64EncodedPlainText = encodedPlainText,
    Base64EncodedContext = encodedContext,
};

Secret<EncryptionResponse> encryptionResponse = await _authenticatedVaultClient.V1.Secrets.Transit.EncryptAsync(keyName, encryptOptions);
string cipherText = encryptionResponse.Data.CipherText;

Encrypt Batched Items

var encryptOptions = new EncryptRequestOptions
{
    BatchedEncryptionItems = new List<EncryptionItem>
    {
        new EncryptionItem { Base64EncodedContext = encodedContext1, Base64EncodedPlainText = encodedPlainText1 },
        new EncryptionItem { Base64EncodedContext = encodedContext2, Base64EncodedPlainText = encodedPlainText2 },
        new EncryptionItem { Base64EncodedContext = encodedContext3, Base64EncodedPlainText = encodedPlainText3 },
    }
};

Secret<EncryptionResponse> encryptionResponse = await _authenticatedVaultClient.V1.Secrets.Transit.EncryptAsync(keyName, encryptOptions);
string firstCipherText = encryptionResponse.Data.BatchedResults.First().CipherText;

Decrypt Method

Decrypt Single Item

var decryptOptions = new DecryptRequestOptions
{
    CipherText = cipherText,
    Base64EncodedContext = encodedContext,
};

Secret<DecryptionResponse> decryptionResponse = await _authenticatedVaultClient.V1.Secrets.Transit.DecryptAsync(keyName, decryptOptions);
string encodedPlainText = decryptionResponse.Data.Base64EncodedPlainText;

Decrypt Batched Item

var decryptOptions = new DecryptRequestOptions
{
    BatchedDecryptionItems = new List<DecryptionItem>
    {
        new DecryptionItem { Base64EncodedContext = encodedContext1, CipherText = cipherText1 },
        new DecryptionItem { Base64EncodedContext = encodedContext2, CipherText = cipherText2 },
        new DecryptionItem { Base64EncodedContext = encodedContext3, CipherText = cipherText3 },
    }
};

Secret<DecryptionResponse> decryptionResponse = await _authenticatedVaultClient.V1.Secrets.Transit.DecryptAsync(keyName, decryptOptions);
string firstEncodedPlainText = decryptionResponse.Data.BatchedResults.First().Base64EncodedPlainText;

Generate Data Key

// Generate Data Key
var dataKeyOptions = new DataKeyRequestOptions
{
    Base64EncodedContext = encodedContext,
    Nonce = nonce
};

Secret<DataKeyResponse> dataKeyResponse = await _authenticatedVaultClient.V1.Secrets.Transit.GenerateDataKeyAsync(keyType, keyName, dataKeyOptions);

var encodedDataKeyPlainText = dataKeyResponse.Data.Base64EncodedPlainText;
var dataKeyCipherText = dataKeyResponse.Data.Base64EncodedCipherText;

Read all Encryption Keys

var allKeys = await _authenticatedVaultClient.V1.Secrets.Transit.ReadAllEncryptionKeysAsync();

Trim Key

var trimOptions = new TrimKeyRequestOptions { MinimumAvailableVersion = 2 };

await _authenticatedVaultClient.V1.Secrets.Transit.TrimKeyAsync(keyName, trimOptions);

Export Key

string version = "latest";

Secret<ExportedKeyInfo> exportedKeyInfo = await _authenticatedVaultClient.V1.Secrets.Transit.ExportKeyAsync(TransitKeyCategory.encryption_key, keyName, version);

Backup Key

• In order for this call to work, the key must have been created with allow_plaintext_backup set to true.

var backup = await _authenticatedVaultClient.V1.Secrets.Transit.BackupKeyAsync(keyName);
string backupData = backup.Data.BackupData;

Restore Key

var restoreData = new RestoreKeyRequestOptions 
{
    BackupData = previouslyBackedUpData, 
    Force = true 
};
await _authenticatedVaultClient.V1.Secrets.Transit.RestoreKeyAsync(keyName, restoreData);

Generate Random Bytes

var byteCountRequested = 64;
var randomOpts = new RandomBytesRequestOptions 
{
    Format = OutputEncodingFormat.base64
};
var base64Response = await _authenticatedVaultClient.V1.Secrets.Transit.GenerateRandomBytesAsync(byteCountRequested, randomOpts);
var base64EncodedRandomData = base64Response.Data.EncodedRandomBytes;

Hash Data String

var hashOpts = new HashRequestOptions
{
    Format = OutputEncodingFormat.base64, 
    Base64EncodedInput = encodedStringToHash
};
var hashResponse = await _authenticatedVaultClient.V1.Secrets.Transit.HashDataAsync(HashAlgorithm.sha2_256, hashOpts);
var hashString = hashResponse.Data.HashSum;

Generate HMAC Single Item

var hmacOptions = new HmacRequestOptions 
{
    Base64EncodedInput = encodedPlainText
};
var hmacResponse = await _authenticatedVaultClient.V1.Secrets.Transit.GenerateHmacAsync(HashAlgorithm.sha2_256, keyName, hmacOptions);

Generate HMAC Batch Item

var hmacList = new HmacRequestOptions
{
    BatchInput = new List<HmacSingleInput>
    {
        new HmacSingleInput {Base64EncodedInput = encodedText},
        new HmacSingleInput {Base64EncodedInput = encodedText2},
        new HmacSingleInput {Base64EncodedInput = encodedText3}
    }
};
var hmacResponse = await _authenticatedVaultClient.V1.Secrets.Transit.GenerateHmacAsync(HashAlgorithm.sha2_256, keyName, hmacList);

Sign Single Item

var signOptions = new SignRequestOptions
{
    Base64EncodedInput = encodedText,
    SignatureAlgorithm = SignatureAlgorithm.Pkcs1v15,
    MarshalingAlgorithm = MarshalingAlgorithm.Asn1
};
var signResponse = await _authenticatedVaultClient.V1.Secrets.Transit.SignDataAsync(HashAlgorithm.sha2_256, keyName, signOptions);

Sign Batched Item

 var signList = new SignRequestOptions
{
    BatchInput = new List<SignSingleInput>
    {
        new SignSingleInput {Base64EncodedInput = encodedText},
        new SignSingleInput {Base64EncodedInput = encodedText2},
        new SignSingleInput {Base64EncodedInput = encodedText3}
    },
    SignatureAlgorithm = SignatureAlgorithm.Pkcs1v15,
    MarshalingAlgorithm = MarshalingAlgorithm.Asn1
};
var signResponse = await _authenticatedVaultClient.V1.Secrets.Transit.SignDataAsync(HashAlgorithm.sha2_256, keyName, signList);

Verify HMAC Single Item

var verifyOptions = new VerifyRequestOptions
{
    Base64EncodedInput = base64Input,
    Hmac = hmacToVerify,
    MarshalingAlgorithm = MarshalingAlgorithm.Asn1
};
var verifyResponse = await _authenticatedVaultClient.V1.Secrets.Transit.VerifySignedDataAsync(HashAlgorithm.sha2_256, keyName, verifyOptions);
var isValid = verifyResponse.Data.Valid;

Verify Signature Single Item

var verifyOptions = new VerifyRequestOptions
{
    Base64EncodedInput = base64Input,
    Signature = signResponse.Data.Signature,
    SignatureAlgorithm = SignatureAlgorithm.Pkcs1v15,
    MarshalingAlgorithm = MarshalingAlgorithm.Asn1
};
var verifyResponse = await _authenticatedVaultClient.V1.Secrets.Transit.VerifySignedDataAsync(HashAlgorithm.sha2_256, keyname, verifyOptions);
var isValid = verifyResponse.Data.Valid;

Read Transit Cache Configuration

var cacheResult = await _authenticatedVaultClient.V1.Secrets.Transit.ReadCacheConfigAsync();
var cacheSize = cacheResult.Data.Size;

Configure Cache

• Configuration changes will not be applied until the transit plugin is reloaded which can be achieved using the /sys/plugins/reload/backend endpoint.

var cacheOptions = new CacheConfigRequestOptions 
{
    Size = cacheResult.Data.Size + 1 
};
await transit.SetCacheConfigAsync(cacheOptions);

System Backend

• The system backend is a default backend in Vault that is mounted at the /sys endpoint.
• This endpoint cannot be disabled or moved, and is used to configure Vault and interact with many of Vault's internal features.

VaultSharp already supports several of the System backend features.

vaultClient.V1.System.<method> // The method you are looking for.

Can I inject my own HttpClient into VaultSharp?

• Yes you can.
• The VaultClientSettings object takes a MyHttpClientProviderFunc delegate that can be as follows.
• Don't worry about setting any vault specific URL, timeout etc. on this http client. VaultSharp will do that.

var settings = new VaultClientSettings("http://localhost:8200", authMethodInfo)
           {
               Namespace = "mynamespace",
               MyHttpClientProviderFunc = handler => new HttpClient(handler)
           };

What is the deal with the Versioning of VaultSharp?

• This library is written for Hashicorp's Vault Service
• The Vault service is evolving constantly and the Hashicorp team is rapidly working on it.
• Because this client library is intended to facilititate the Vault Service operations, this library makes it easier for its consumers to relate to the Vault service it supports.
• Hence a version of 0.11.x denotes that this library will support the Vault 0.11.x Service Apis.
• Tomorrow when Vault Service gets upgraded to x.0.0, this library will be modified accordingly and versioned as x.0.0
• VaultSharp starts at e.g. 2.3.0 matching the Vault Server exactly, and then can go 2.3.0001, 2.3.0002 etc. for bug fixes etc. within 2.3.0 of Vault.
• Another thing to note is that, empirically, VaultSharp and Vault have been amazingly compatible even with great versioning differences. Kudos to the Vault team.

Can I use it in my PowerShell Automation?

• Absolutely. VaultSharp is a .NET Library.
• This means, apart from using it in your C#, VB.NET, J#.NET and any .NET application, you can use it in PowerShell automation as well.
• Load up the DLL in your PowerShell code and execute the methods. PowerShell can totally work with .NET Dlls.

All the methods are async. How do I use them synchronously?

• The methods are async as the defacto implementation. The recommended usage.
• However, there are innumerable scenarios where you would continue to want to use it synchronously.
• For all those cases, there are various options available to you.
• There is a lot of discussion around the right usage, avoiding deadlocks etc.
• This library allows you to set the 'continueAsyncTasksOnCapturedContext' option when you initialize the client.
• It is an optional parameter and defaults to 'false'
• Setting it to false, allows you to access the .Result property of the task with reduced/zero deadlock issues.
• There are other ways as well to invoke it synchronously, and I leave it to the users of the library. (Task.Run etc.)
• But please note that as much as possible, use it in an async manner.

In Conclusion

• If the above documentation doesn't help you, feel free to create an issue or email me. https://github.com/rajanadar/VaultSharp/issues/new

Happy Coding folks!